Table 5.

Multivariate subgroup analysis of 5-years OS, according to adjuvant chemotherapy and tumor sidedness.

	5-years survival, %	HR	95% CI	P
Adjuvant chemotherapy (n = 8,985)
Left sided	73.4	Ref = 1
Right sided	73.5	1.04	0.94–1.15	0.4623
Transverse	74.1	0.96	0.83–1.13	0.6022
No adjuvant chemotherapy (n = 33,986)
Left sided	54	Ref=1
Right sided	54.6	0.92	0.88–0.96	<0.0001
Transverse	53.8	0.95	0.9–1.00	0.0677
Left sided
(n = 15,107)
No chemotherapy	54	Ref = 1
Chemotherapy	73.4	0.58	0.53–0.62	<0.0001
Right sided
(n = 23,151)
No chemotherapy	54.6	Ref = 1
Chemotherapy	73.5	0.6	0.56–0.65	<0.0001
Transverse
(n= 4,713)
No chemotherapy	53.8	Ref = 1
Chemotherapy	74.1	0.55	0.48–0.64	<0.0001